LOAD CONTROL FROM CONTROL PLANE CIoT EPS OPTIMISATION

1. A core network node, comprising: a transmitter configured to transmit a control plane data back-off timer to restrict only a request from a UE (User Equipment) for data transmission via Control Plane CIoT (Cellular Internet of Things) Optimization, under overload conditions from data transfer via a Control plane.

2. The core network node according to claim 1 , wherein the transmitter is further configured to transmit the control plane data back-off timer under overload condition in the core network node.

3. The core network node according to claim 1 , further comprising: a memory storing instructions; and at least one processor configured to process the instructions to: reject the request for the data transmission via Control Plane CIoT Optimization from the UE for the duration of the control plane data back-off timer.

4. The core network node according to claim 1 , wherein the transmitter is further configured to transmit the control plane data back-off timer in a NAS (Non-Access Stratum) message.

5. The core network node according to claim 1 , further comprising: a memory configured to store the control plane data back-off timer per UE.

6. A UE (User Equipment), comprising: a receiver configured to receive a control plane data back-off timer from a core network node, under overload conditions from data transfer via a Control plane; a memory configured to store instructions; and at least one processor configured to process the instructions to not initiate only data transmission via Control Plane CIoT (Cellular Internet of Things) Optimization while the control plane data back-off timer is running.

7. The UE according to claim 6 , wherein the at least one processor is further configured to process the instructions to initiate data transmission via User Plane CIoT Optimization while the control plane data back-off timer is running.

8. A transmission controlling method, comprising: transmitting a control plane data back-off timer to restrict only a request from a User Equipment (UE) for data transmission via Control Plane CIoT (Cellular Internet of Things) Optimization, under overload conditions from data transfer via a Control plane.

9. The transmission controlling method according to claim 8 , wherein the transmitting is performed under overload condition in the core network node.

10. The transmission controlling method according to claim 8 , further comprising: rejecting the request for the data transmission via Control Plane CIoT Optimization from the UE for the duration of the control plane data back-off timer.

11. The transmission controlling method according to claim 8 , wherein the control plane data back-off timer is included in a NAS (Non-Access Stratum) message.

12. The transmission controlling method according to claim 8 , further comprising: storing the control plane data back-off timer per UE.

13. A communication method, comprising: receiving a control plane data back-off timer from a core network node, under overload conditions from data transfer via a Control plane; and not initiating only data transmission via Control Plane CIoT (Cellular Internet of Things) Optimization while the control plane data back-off timer is running.

14. The communication method according to claim 13 , further comprising: initiating data transmission via User Plane CIoT Optimization while the control plane data back-off timer is running.